Left panel: observed source fluxes in the PACS bands at 70/100 μm and 160 μm (green and red points, respectively), compared with the detector sensitivity threshold at 5σ for one hour of observation (shown as dash-dotted green and red lines). Right panel: same figure for the SPIRE band at 250 μm, 350 μm, 500 μm (blue, green, and red points, respectively). The three dash-dotted lines are the detector sensitivity thresholds in the three bands at 5σ for one-hour observations.